Symfony service designed to work with Google Translate API

2.1.2 2017-09-26 23:43 UTC


SensioLabsInsight Build Status

This bundle provides a symfony service to interact with Google Translate API. https://developers.google.com/translate/v2/getting_started

To be able to translate sentences, you have to enable billing on your Google Cloud Console https://developers.google.com/translate/v2/pricing


Installation is a quick 3 step process:

  1. Download PryonGoogleTranslatorBundle using composer
  2. Enable the Bundle
  3. Configure your application's config.yml

Step 1: Download PryonGoogleTranslatorBundle using composer

php composer.phar require zeliard91/google-translator-bundle

Step 2: Enable the bundle

Enable the bundle in the kernel:

// app/AppKernel.php

public function registerBundles()
    $bundles = array(
        // ...
        new Pryon\GoogleTranslatorBundle\PryonGoogleTranslatorBundle(),

Step 3: Add your Google API Key in configuration

# app/config/config.yml

    google_api_key: MySecretKey


The bundle provides a service to your app in order to call the Google Translate API in REST.


Get supported languages


$languages = $this->get('pryon.google.translator')->getSupportedLanguages();

Translate sentences


$translation = $this->get('pryon.google.translator')->translate('en','fr','I love Symfony');
//->"J'adore Symfony"

$translations = $this->get('pryon.google.translator')->translate('en','fr', array('I love Symfony', 'I like PHP'));
//->["J'adore Symfony", "J'aime PHP"]

Be aware that Google restricts the use of this service by limiting the size of the query at 5K caracteres with the POST method (and 2K in GET). The number of queries is also limited to 128 if you pass an array for the third argument of the translate method.

The translate method detects if these limits are reached and call the API as many times as necessary which may result a long processing.

Form Type

A "translatorlanguage" Form Type is also present in this bundle. It is basically the same as the core "language" Form Type except from the choices list which is filled by the API.


use Pryon\GoogleTranslatorBundle\Form\Type\LanguageType;
use Symfony\Component\Form\FormBuilderInterface;

public function buildForm(FormBuilderInterface $builder, array $options)
        // ...
        ->add('source', LanguageType::class, array(
            'required' => true,
            'label' => 'Source language'


You can cache the responses of the API with one of the subclasses of Doctrine\Common\Cache\CacheProvider

This can be done by specifying what you want to cache and with what in the configuration file. This is the default configuration :

# app/config/config.yml

        # Specify your doctrine cache service
        service: pryon.google.translator.array_cache_provider
            # get available languages method
            languages: true
            # translate method
            translate: false

HTTP Client Options

You can define default HTTP headesr for the REST client hitting the Google API :

# app/config/config.yml

    # ...
            Referer: %router.request_context.scheme%://%router.request_context.host%%router.request_context.base_url%
            User-Agent: Mr Robot

See Guzzle doc for more information.